LED lamp

Abstract

An LED lamp includes a cylindrical tube and two lamp holders fixed on two ends of the cylindrical tube. The cylindrical tube comprises a lampshade, a lamp plate, and a heat dispersing plate. The heat dispersing plate further comprises a base portion and two fastening portions. Two free edges of the base portion comprise two supports extending toward each other. The fastening portions are connected to the supports correspondingly, and the lamp shape and the lamp plate are fixed to the fastening portions correspondingly. Two lamp holders are fixed to opposite ends of the cylindrical tube, and each of the lamp holders comprises a hollow shell and a protrusion formed on an inner wall of the hollow shell. The protrusion resists against one end of the supports to prevent the lampshade from rotating relative to the heat dispersing plate.

1. An LED lamp comprising:
 a hollow tube comprising a lampshade, a lamp plate and a heat dispersing plate; the heat dispersing plate comprising a base portion and two fastening portions, two free edges of the base portion comprising two supports extending toward each other, the fastening portions being respectively connected to the supports, the lampshade and the lamp plate being mounted to the fastening portions; 
 two lamp holders fixed to opposite ends of the cylindrical tube, each of the two lamp holders comprising a hollow shell and at least one protrusion formed on an inner wall of the hollow shell, the at least one protrusion resisting against one end of the supports to prevent the lampshade from rotating relative to the heat dispersing plate; 
 wherein the bottom of the hollow shell defines a plurality of alignment holes and screw holes, when assembling the LED lamp, the alignment holes are aligned with the first grooves of the heat dispersing plate to fix the hollow shell to the heat dispersing plate. 
 
     
     
       2. The LED lamp of  claim 1 , wherein each of the fastening portions extends upwardly from one of the supports, and comprises a latching member and a positioning protrusion; each latching member that is perpendicular to the support extends upwardly to form a first groove; the positioning protrusion that is perpendicular to a sidewall of the latching member; a second groove is formed between the positioning protrusion and the support to receive the lamp plate. 
     
     
       3. The LED lamp of  claim 2 , wherein each latching member is an L-shaped hook perpendicular to the support, the free end of the L-shaped hook is defined at the inside of a first end of the support. 
     
     
       4. The LED lamp of  claim 2 , wherein the positioning protrusion perpendicular to a sidewall of the latching member extends along opposite to the first end of the support. 
     
     
       5. The LED lamp of  claim 2 , wherein a free end of the positioning protrusion is substantially coplanar with a second end of the support. 
     
     
       6. The LED lamp of  claim 1 , wherein opposite ends of the lampshade each comprise two protrusions opposite to each other engaged in the first groove to fix the lamp shape on the heat dispersing plate. 
     
     
       7. The LED lamp of  claim 1 , wherein the base portion is integrally formed with the fastening portions. 
     
     
       8. The LED lamp of  claim 1 , wherein the length of two supports is smaller than the radius of the base portion. 
     
     
       9. The LED lamp of  claim 1 , wherein each of the lamp holders further comprises two contact pins, each of contact pins extends out of the hollow shell and is fixed to the hollow shell. 
     
     
       10. The LED lamp of  claim 1 , wherein the heat dispersing plate is made of aluminium alloy material. 
     
     
       11. The LED lamp of  claim 1 , wherein the lampshade is semi-circular and is made of transparent fire-resistant material. 
     
     
       12. An LED lamp comprising:
 a hollow tube comprising a lampshade, a lamp plate and a heat dispersing plate; the heat dispersing plate comprising a base portion and two fastening portions, two free edges of the base portion comprising two supports extending toward each other, the fastening portions being respectively connected to the supports, the lampshade and the lamp plate being mounted to the fastening portions; wherein each of the fastening portions extends upwardly from one of the supports, and comprises a latching member; each latching member that is perpendicular to the support extends upwardly to form a first groove for fixing the lamp shape on the heat dispersing plate; 
 two lamp holders fixed to opposite ends of the cylindrical tube, each of the two lamp holders comprising a hollow shell; 
 wherein the bottom of the hollow shell defines a plurality of alignment holes, when assembling the LED lamp, the alignment holes are aligned with the first grooves of the heat dispersing plate for allowing screws extended through the alignment holes and screwed into the first grooves to fix the hollow shell to the heat dispersing plate. 
 
     
     
       13. The LED lamp of  claim 12 , wherein at least one protrusion is formed on an inner wall of the hollow shell, the at least one protrusion resisting against one end of the supports to prevent the lampshade from sliding on the heat dispersing plate and rotating relative to the heat dispersing plate. 
     
     
       14. The LED lamp of  claim 12 , wherein each latching member is an L-shaped hook perpendicular to the support, and the free end of the L-shaped hook is defined at the inside of a first end of the support. 
     
     
       15. The LED lamp of  claim 12 , wherein each of the fastening portions further comprises a positioning protrusion; the positioning protrusion that is perpendicular to a sidewall of the latching member; and a second groove is formed between the positioning protrusion and the support to receive the lamp plate. 
     
     
       16. The LED lamp of  claim 15 , wherein the positioning protrusion perpendicular to a sidewall of the latching member extends along opposite to the first end of the support. 
     
     
       17. The LED lamp of  claim 12 , wherein opposite ends of the lampshade each comprise two protrusions opposite to each other engaged in the first groove to fix the lamp shape on the heat dispersing plate.